Gas-tubing.



J. J. 'VAUTIER.

GAS TUBING.

APPLICATION FILED 001.5. I914. RENEWED DEC. 30. m5.

Patented-Apr. 11, 1916.

IIIIIII" COLUMBIA PLANOGRAPH ,c0., WASHINGTON, n. c.

- 5 sfrarns PATENT me JOHN J. vAUTIEa-or NEW YORK, 1v. Y; f

enswine.

Specification of Letters ratent. Patentednpr. 11, 1916;

Application filed October 5, 1914, Serial No. 865,134. Renewed December30, 1 915. Serial No; 69,503.

ToaZZ whom it may concern:

Be it known that I, JOHN' J. VAUrrER, a citizen ofthe United States ofAmerica, re-

siding at the city of New York, county and.

State of New York, haveinvented certain new and useful Improvements inGas-Tubing, of which the following is a specification.

This invention relates more particularly to tubing adapted forconducting heating or lighting gas to the burners of laundry irons,stoves,lamps, etc., and has for its object to provide a very strong andflexible and practically fire-proof .gas tubing which will safely resistheavy external transverse pres sure and which will be protected fromquick indentation 0r cutting-of the tube composition 8 by constrictivepressure of said fwire abrasion or wear when in use.

The invention'will first be described and then will be particularlydefinedin claims hereinafter set forth.. I

. of a piece of tubing of the preferred'construction and showing invdetail the elements of which it is composed. Fig. 2 is acrosssection ofsaid tubing drawn to a larger scale; Fig. 3 is a broken or sectionalside view of tubing having a slightly modified construction; and Fig. 4is an enlarged crosssection of said modified tubing.

First referring more specially to Figs. 1 and 2 of the drawings, thenumeral 5 indicates the innermost tube element formed as a foundationwire spiral outside of which is applied a wrapping of any suitabledampproof material 6, which may be treated paper or other fibroussubstance. Outside of said material 6, is placed a fibrous braidedtextile tubular layer 7 to which is applied any ordinary ,coating orcomposition 8 having necessary fluid-tight and flexible qualities suchas a glue and glycerin compound. It is preferred to apply outside of thecomposition 8, any suitable layer or other covering such as a braid 9,around which is applied a wrapping or covering 10 of any suitablesubstantially fire-proof material, such as asbestos, which is held inplace by an exterior wrapping of open-coiled semi-fire In the modifiedtubing shown Figs. 3 and 4, the fibrous or textile layer 9 surroundingthe composition layer 8, is omitted,but

otherwise this form of the invention is similar in. structure andoperation to the first described tubing shown in Figs. 1 and 2 of. thedrawings. The particular advantage ofusing the fibrous layer 9 "is thatit allows the asbestos wrapping 10 and the snugly coiled external armorwire. 11, to bev applied more quickly during manufactureof the tubing,or before the plastic composition 8 has had time to fully assume itsnormal seasoned state.;--.Sa1d fibrous layer 9, also forms a-cushlonwhich prevents in urious as it is coiled around the asbestos wrapping10, and meanwhile also prevents'injury to or cutting of the somewhatdelicate asbestos 10 by pressure of the outer coilwrapping ing wire. 1

The interior flexible openecoiled wire foundation 5, coactswith theexterior coiled armor wire 11, in giving great transverse strength tothe tubing which enables it to safely withstand comparatively heavytransverse pressures when 1n 'use,as for lnstance when accidentallystepped upon or when struck by falling objects or when otherwisesubjected to pressure tending to crush the tubing. While thus assuringmaximum 8, whereby said wrapping 6 protects the composition from erosionor other injury by such acids. If the coil 5, be made of metal or othermaterial not containing acids or substances which would injuriouslyaffect the composition 8, said wrapping 6, may be dispensed with.

I am not aware of any prior tubing which combines in its construction aninterior transversely reinforcing wire coil, and an exteriortransversely reinforcing semi-fireproof wire coil' armor applieddirectly over or around a layer of asbestos or other substantiallyfire-proof material, together with intermediate fibrous or compositionlayers, as in this invention, the object of which is to assure that theexternal fire-proof layer aided by the surrounding Wire coil armor shallamply protect the interior tubing layers from injury by external heat orby contact With heated surfaces While said armor coil also preventsquick external frictional Wear of the tubing, and While both interiorand exterior Wire coils give maximum trans verse strength to the tubingWithout sacrificing its necessary flexibility and elasticity.

Flexible tubing having varying diameters and made in accordance withthis invention may advantageously be used for conveying fluids otherthan heating or lighting gas, as for instance, the tubing may conveycompressed air to riveting machines or to stone carving or cleaningmachines, or for other purposes, as will readily be understood.

I claim as my invention 1. Flexible gas tubing comprising interior andexterior Wire coils, an interposed layer of fluid-proof composition, anda layer of substantially fire-proof material applied outside of saidcomposition and next Within the outer Wire coil, substantially asdescribed.

2. Flexible gas tubing comprising interior and exterior Wire coils, aWrapping of dampproof material applied outside the inner coil, afluid-proof composition layer surrounding said damp-proof Wrapping, anda layer of substantially fire-proof material applied outside of saidcomposition layer and next Within the outer Wire coil, substantially asdescribed.

8. Flexible gas tubing comprising interior and exterior ire coils, aninterposed layer of fluid-proof composition, a guarding fibrous layerapplied outside of the composition layer, and a layer of substantiallyfireproof material applied around said guarding fibrous layer and nextWithin the outer Wire coil, substantially as described.

4. Flexible gas tubing comprising interior and exterior Wire coils andinterposed layers including a Wrapping of damp-proof material appliedoutside the inner coil, a composition layer having a fibrous foundationap plied outside the damp-proof Wrapping, and a layer of substantiallyfire-proof material applied outside said composition and next Within theouter Wire coil, substantially as described.

5. Flexible gas tubing comprising inte rior and exterior Wire coils andinterposed layers including a Wrapping of damp-proof material appliedoutside of the inner coil, a composition layer having a fibrousfoundation applied outside of the clamp-proof Wrapping, a fibrousguarding layer applied outside of the composition layer, and a layer ofsubstantially fire-proof material applied around said fibrous guardinglayer and next Within the outer Wire coil, substantially as described.

JOHN J. VAUTIERV.

Witnesses:

ALVIN K. GOODWIN, THos. REID.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

